SkinnerDB uses reinforcement learning for reliable join ordering, exploiting an adaptive
processing engine with specialized join algorithms and data structures. It maintains no data …

Robust query optimization becomes illusory in the presence of correlated predicates or user-
defined functions. Occasionally, the query optimizer will choose join orders whose execution …

Optimising queries in real-world situations under imperfect conditions is still a problem that
has not been fully solved. We consider finding the optimal order in which to execute a given …

The query optimiser in a database management system (DBMS) is responsible for nding a
good order in which to execute the operators in a given query. However, in practice the …

The quality of an execution plan generated by a query optimizer is highly dependent on the
quality of the estimates produced by the cost model. Unfortunately, these estimates are often …

La qualité d'un plan d'exécution engendré par un optimiseur de requêtes est fortement
dépendante de la qualité des estimations produites par le modèle de coûts …